On a page in which I have a Custom Display generated by the plugin Formidable Pro, the LinkedIn button appears twice - side by side - on the floating bar - which has the additional effect of stretching the floating bar horizontally covering part of the page's text.

Two simple solutions: deactivate LinkedIn button (not ideal), or make the page with a custom display assigned to a custom page type that includes the filter to remove Digg Digg from that template (also not ideal as I'd like the Digg Digg bar).